Machine for printing and for other purposes.



W. E NIGKERSON. MACHINE FOB. PRINTING AND FOR OTHER PURPOS APPLICATION FILED FEBJG, 1906.

Patented Oct.14, 1913.

12 SHEETS-SHEET 1.

Q1 k M .4 w .W 1

MT ESSES- W. E. NIGKBRSON. MACHINE FOB PRINTING AND FOR OTHER PURPOSES.

' union-I011 rum) FEBJG, 190s.

, 1,075,989. Patented 001.14, 1913.

12 SHEETS-SHEET 2.

ATNESSES' IHVEgJTU W72 1 .2 M I fizza bm sin Wm W. E. NIGKERSON. MACHINE r011 PRINTING AND FOR OTHER PURPOSES.

APPLICATION FILED FEB. 18, 1906.

Patnted Oct, 14, 1913;

1 2 SHEETS-SHEET 3.

EEEEE P INVENTEIFQrL /lwfffi yaw W. E. NICKERSON. MACHINE FOR PRINTING AND FOR OTHER PURPOSES. APPLICATION FILED PEB.16, 190s.

1,075,989. H'tented Oct. 14; 1913 13 SHEETSSHEBT 4. Z736 Q15 [If llllm 5H5 a 54'' mzg' fl 6'' v7 P. iiillmlj' MACHINE FOIL mmmm mm Pox *STHEE PURPOSES APIL1U,=TIMIILQ? IRENE. 1906.

1 07598 Patented i 5,, i913.

\ 1/ 3: 5;? vsaan'ra.

m WITNEEEEE- Nrurg.

WICXERSON.

M; AND FOR OTHER PURPOSES.

Patented 0st. 14, 1913.

12 SHEBTSSHEET 6.

MACHINE FOR PRINTL APPLICATION FILED r2215, 1906 III III w. 'E. NIGKBRSON. THINE FOR PRINTING AND FOR OTHER PURPOSES.

APPLIGATION FILED FEB.16, 1906. r' 0 1 07 ,9 9, Patented 00t.14,191U.

12 SHEETS--SHEET 7.

lllll W11" :55 as 6%)? Y/MW W. B. NIOKBRSON. MACHINE FOR, PRINTING AND FOR OTHER PURPOSES.

APPLICATION FILED FEB. L6, 1906 1,075,989. Patentd Oct. 14, 1913.

12 SHEETS SHEET 8.

:uiumy' I W. -E. NIGKERSON.

MACHINE FOR PRINTING AND FOR OTHER PURPOSES.

APPLILA'IXON rum- FB16,-}906.

1,075,989. Patented 0ct.14,1913.

12 QHEETS SHEET 9.

1 1 4i 1 n N, mu

I illl Ty E 2 [NEH-FDR. @Jg

W. E. NIOKBRSON. MACHINE FOR PRINTING AND FOR OTHER PURPOSES.

APPLICATION FILED IEBJfi, 1806.

Patented Oct. 14, 1913.

W. B NIOKBRSON.

MACHINE FOR PRINTING ANIJ FOR OTHER PURPOSES.

APPLICATION FILED YEB,16.1906.

Patented Oct. 14, 1913.

' l2 SHEETS-SHEET 11.

gwgt 5 WITH EEEES w. E, NIOKBRSQN. MACHINE FOR PRINTING AND FOR OTHER PURPOSES.

APPLICATION BIL-ED PIA 1906, 1 075 939, Patented 0ct.14,1913.

12 SHEETS-SHEET 12.

WITNESSES- BEST Av UNITED s'trn'frns wmy monctmrm, or 83mm To all whom, it may concern:

Be it known that I, WILLiAM E. is IUKER- son, the city of Cambridge, count of Middiesex, and State of Massachusetts. ave

invented certain new and useful Improve ments in Machines for Printing and for other inn-poses. of which the follmving is a specification.

The improvement relates to machines designed to print, etch or stamp upon small flat articles and is especially aria ted for printing on both sides of a razor lane of the Gillette type, but may readily be adept ed and used tor printing, etching, stamp in or marking other articles.

he principal objects of the invention are to provide means for automatically picking upjand transferringrazor blades or other articles from a pile 'or stack to a printing block, and to provide means for transfer riun such blades after being printed on one side, to a second printing block where they are printed on the other side and finally thrown oti or delivered from the machine to receptacle or desired.

The invention consists in the combinations of devices, parts, and means for producing;

the fl'ects intended, hereinoii'ter more fully described and pointed out or indicated in antlby the claims.

As the make up of the l'IltlCllllltB is such as to readily lend itself to a division of the cooperating parts into grou !F,lllOSl'.- of which go back to the main shaft or their impulse, .it will be convenient to designate each of these groups by a letter andtheir members or related parts by the same letter with an appropriate cardinal index number. It may,

however, be premised groups comprise the frame work and fixed supporting parts; the main shaft and power supply parts; the supply or stack-plate and related parts; the carrying arm and its connecti'ons; the suction cylinder 'and operating connections; the first printing bloc and connections; the first printin arm and connecting or related parts; v ad and 'connections; the 'secondnprinting block and connections; the second printing arm; the second inking pad, the throw on arm and its automaticallv shutting off the power when a stack of b ades has been exhausted.

. In the drawings Fl vution of the machine,

specifioattun oi Letters Patent.

that the several tlie first. inking connection, and the group for? blade from the stack gnre 1 is a front ele-' Fig. '2 'a side eleva--= mnssitenuss'rrs, ASSIGNOB 1'0 GILLETTE- BOSTON, MASSACHUSETTS. A COBPOBAIION O! .mtcnmn FOE PRT'WYING mm FOB 0mm; romeo.

t is an enlarged vertical section of the updieated by the arrow. Fig. 5 is an enlarged horizonts section looking, down on arts of the machine from the line '5, 5, of Fig. 1, on which this view is taken. Fig. 6 is anen- 'largeo plan vien of the printing blocks when in printing position along with their pivoted carrying arms aid the 'throw ofl' urn; Fi T is a vertical section taken on the line 5, 7, of Fig. e wah dotted lines showingthe positions of the tiwo printing docks and their carryingnrms with a" razor blade n transit,the vpoint reached being 185 from the stint of the semi-circle. Fig. '8 is an enlarged Ian-view of one of the type arm is resting, and 'shows the mechanism for gradually rotating the inking pad and for keeping the stripper pin from touching it.- Fig. 9 is an elewtion, partly in Hfif-Ctitnl. taken on the line 9, 9, 0'? Fig. 8, and Fig. 10 is a sectional detail aken on the line 1 10, of Fig. 8, showing-an ec entric lock roller and part of the ink-pad dish. Fig. It is an enlarged sectional detail of the printiitgarm and type block resting upon a razor blade. as in the act of printing, the stripper pin being also shown as resting upon the blade supported on the printing parts and upward somewhat from the blade, while the stripper pin still rests on the biede which it has detached from the type blo k. Fig.

partly in section of t e suction carrying arm shown in the act of taking plate. Flgk'l'l is also detail of the suction carrying y iueide elevation and partly in ing an eular aim, putt inking pads on -w ich the first printing or 1.6 is an' enlarged 'detal up the last A Patent/ed Get. 14, 19 13." Application med february 1c, 1906. serial No. sauna.

tlon thereof, and Fig. 3 a planiew; Fig.

per par-tot the machine taken on the .line 4, l, of Fig 1, looking in the direction inblock. Fig. l2 is a similar view of the same shows the printing arm moved 13 is an enlarged plan of the stack plate for carrymfi a su ply of the biades to be j ale for governing the movements of the stack plate and of part offthe stack plate, the arm be-.

last blade has been removed from the stack a section taken on the line 17, 17, of Fig. 16, the support being shown broken. Fig. 17 also shows part of the mechanism for stop ping the operation of the device when the in Fig. 19, with related parts removed and the ports exposed to view. Fig. 21 is an enlarged plan of a retaining plate for the piston rod and also shows ports. Fig. 22 shows a razor blade with printing thereon as done by the first printing arm and printing block.

' and Fig. 23 shows recesws in the second printing block 25 corresponding with the printing done by the first printing block as to preventblurring when the blade with a fresh imprint is transferred from the first Fig. 21 1s a to the second printing "block. vertical section of the second printing block taken .on the line 21, 21, of 23, showing the depth of the. recesses for preventing blurring. Fig. 25 is a bottom plan of the suction pad. The remaining figures are dia grammatic views, in sequence, of different oil and printing arms, printing blocks and their arms. Th'e'carrying arm in Fig. 26 is raisedealid about to swing over the first printing block, while both printing arms are at on their inking pads. The only changes in position of the parts which Fig. .27 shows, are in the suction carrying arm which is placing a blade on the first printing block, and in the stack plate which is in the act ofiimaking a quarter rotation. The changes shown by Fig. 28 are: The stack plate has completed its quarter rotation, the suction carrying arm is over the stack plate anda blade. isbeing printed by the first printing armon the first printing block. In Fig. 29 the second printing block has folded overon to the first printing block preparatory to a transfer of the blade, the first printing arm has returned to its inking pad and the suction carrying arm has dropped 11 on a blade stack and is ready to raise a b ado from the stack brought into osit-ion by'the quarter rotation of the stacc plate. The only change shown by Fig. 30 is that both print-ing'arms have turned over together on their common pivot so that the first block is uppermost and the blade is restin on'the second block. In Fig. l. .7 the firstfi'printing block has returned. to itsprinting position after leaving the blade on ositions of a suction.car in arm throwthe second block where it-is being printed by the second printing arm. Fig. 3200111 ])l('i". the cycle of movements. The second printing arm has returned to its inking pad, the throw-oil arm is tossing the blade into some receptacle and about to return to its first position. The only difl'ercnce in the cycle elf movements shown by these diagrams from the actual operation is that in pra -tiwthe suction carrying arm and the first printing arm do not wait for the throwoil arm to work and complete a cycle, but begin a new cycle as soon as the later movements are far enough advanced to avoid interierenee.

In the drawings, A (Figs. 1, 2 and 3) is the general base plate resting upon the floor, andA (Figs. 1, 2, 3, 4 and 5), the supporting fral'nework adapted, in combination with the top or table A (Figs. 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13 and 19) to carry the various workin members of the device and their relate parts.

The general power shaft B (Figs. 1, 2, 4, 5, and. 14), operates the various groups of members by means of cams, excepting the stack plate which is driven by a belt and pulleys, (Fig. 1') so that one rotation of the shaft produces a complete cycle of movements. the framework A at B and B (.Figs. 1 and 5) and is itself driven continuously through the gear B (Figs. 1 and 5) by the pinion B (Fig. .1) which is mounted upon the auxiliary driv-in shaft B (Figs. 1, 3, 4 and 5) itself also Journaled in the frameworlrA as shown at B and B. (Fig. 1) and carrying upon one end the tight pulley B and loose pulley B (Figs. 1, 3 and 5) by means of which it is driven in the usual manner.

The shaft. 13 is iournaled in 9 The supply of blades to be printed is arranged in piles or stacks on the stack plate C (Figs. 1, 2, a, 4, 1a, 14, 15, 16, 17, and 26 to 32 inclusive). The blades have holes in them as shown in Fig. 22, and are held in osition by the vertical pins C, C, as shown in Fig. 3. Resting upon the stack plate underneath each stack of blades is a block (1 of substantially the same plan view as a blade, excepting that the central part is out out forming a recess under the bottom blade of each stack. These blocks (Z are shown plainly in Figs. 4, 16 and 17. They cooperate with automatic stopping mechanism as will hereafter appear.

The stack plate C is mounted rigidly on the upper end of the vertical spindle t, which Is journaled at C and C in the U shaped bracket C, the latter being bolted to the edge of the table A (see Figs. 1, 2, 3,

4,13, 14 and 15)., The spindle C is vertically supported by a friction disk (7" which rests in turn upon the upper side of the pulley C (Figs. 1, 2, 4, 14 and 15). There is preferably a leather washer C between the disk C and the pulley C as shown in Figs. 14 and 15. The disk C is rigidly, and the pulley C loosely mounted on the spindle C Continuous rotation is imparted to the pulley C by the belt C which runs over the idler pulleys C and C" (Figs. 1, 2 and 3) to the pulley C mounted on the main power shaft B (Figs. 1 and 5). This gives the stack plate C a constant tendency to rotate, but it is restrained from so doing by the stack plate latch C which is pivoted at C and engages by means of the shoulder C with the latch pieces C", C", on the stack plate C (Figs. 3, 13, 14 and 15).

At each cycle of movements it is desirable that the stack plate rotate a quarter turn and bring another stack of blades into position, in order that all the stacks be acted upon. This is accomplished at the proper part of each cycle by the momenw y disengagement of the stack plate latch by means of the cam C (Figs. 1, 5 and 14) mounted on the main power shaft B. said cam acting through the roller C and the lever (Fig. 14) the latter being piv oted at C and having pivoted to it, at the.

upper end, the all-rod C which engages by means of a s ioul-der C with a depend ent portion C of the said stack plate latch. The pull rod C rests upon a horizontal led e C on the de enden't portion C of the etch C, and is licpt from being laterally displaced by a guard piece When the pull rod C is drawn back by the connected lever "and its cam, the pull rod shoulder 3", after having moved the latch, is pried out of engagement by the lifting of said rod C -by the rear cud of the ledge C as the latter assumes an inclined position as shown in Fig. 15, and the latch C, whic'h'has been momentarily disengaged from the stack plate latch piece (7", is allowed to be drawn back into the engagement position by the latch spring C. This latch mechanism is best seen in Figs. 13, 14 and 15.

The next group of members in order consists of the suction carrying armD (Figs. 1, i3, 3, 4, 5, 16 and 17) and itsimmcdiately related arts. The construction of the arm itself is best seen in detail in Figs. 16 and 17. The suction arm D is rigidly mounted, b 1 D on the upper end of the vertical rod D which is arranged to have a reciprocating vertical motion and also a motion of partial rotation, as will be hereinafter described. The rod D is uided by the boxes 1) and D", the former coated in the table A and the latter at the outer end 'of the rigid armD which isbolted to the main framework A at D The suction carryin arm' I) (Figs. 16 and 17) is provided wit an extension iece D projecting laterally means of the hub D" and the set screw from the hub D at a right angle to the arm itself, and having the stop screws D, and D provided with lock nuts as shown. These stop screws serve, in connection, respectively, with the standards D and I) mounted rigidly in the table A to limit and adjust the lateral swing of the arm D when it is moved by the vertical rod 1) (Figs. 1 and 3). Vertical reciprocal movement is given to the rod-D by the lever D which is forked at its outer end and provided with rollers D (Figs. 1 and 5), these rollers supporting the rod by means of the collar D rigidly attached to it. The lever D is pivoted at I) to the bracket D" which is rigidly secured at D" to the table A. The lever D is operated by the cam D, the lever being provided with the roller 1) which bears on the top of the cam,thc latter being mounted on the main power shaft B. This is best seen by the dotted lines in Fig. 4. The rod D is given partial rotation in one direction by means of an extensible and elastic pull rod D connected at one end to an arm D rigidly secured to said rod D and at its other endto the arm C? which is operated by the cam C as previously described. In opposition to the foregoing, the 'rod 'D" is revcrsely rotated bythe weight I) acting on the arm I), through the cord D which passes over the idler pulley l), the said arm I) being rigidly mounted on the rod D The combined movements of the rod D", derived from the above described mechanisms arc such as to cause the attached suction carrying arm to rise from a blade stack,

then swing over the first printing block (to be hereinafter described), to drop upon the said block, then to rise again and after swinging back over the blade stack, to drop again thereon, thus completing its cycle.

The suction carrying arm D brovidcd at its outer end with a suction pad I) (Fig. 25), preferably of rubber and consist ingot a flat top part I) having a down wardly projecting ring-like part D with a central piece D producing together an annular suction space D which is applied to the surface of a blade, the central piece. I) closing the central hole in the blade. The suction pad .D" has a small perforation D which registers with a siniilar perforation I) in the block D, preferably of wood, to which the rubber-pad is cemented. The perforation D. registers again with apassageway D? in the arm to which the block D is fastened by means of the clamps D having the binding screwsfD". as shown (Fig.;17-). The-passage D connects with another passage D? in the arm D which connects in turn by means of the nip )le D with the flexible tube D, the latter leading to a suction cylinder which willfbe described separately.

the head E having provision for the passage of the piston rod E, which has an enlarged part E at its lower end and is thereby held to the piston E by the plate E having the recess E, the said plate E being fastened to the piston by the screws E", E as shown. The ports E", E through the piston E and plate E are closed to downward passage by the upwardly open-- ing valve E which slides on the piston rod E and is )rcssed uion the wei ht E which also slides upon the said piston rod. The inlet port E is a little above the bottom of the cylinder so that it not uncovered until the piston ha moved upward somewhat, whereby a i vacuum is first formed under the ri mtor, so that when the port is uncc'r ther rise of the piston a sharp suction is produced in the arm l ZFlillll'Qr'l. o draw the blade firmly against the rubber suction pad D ingress and egress c-t air in the lln(i01- E above the piston is provided for by the port l), the receptacle ll" with the shield ll being useful for prcrcnling the blowing out of spray from the oil which is used to seal and lubricate the piston. The iston rod 1 also enlarged at the upper end E and is thereby loosely, but strongly, attached to the littinp rod l4)" by the collar E which is hold upon the litting rod by the transverse pin it". The lifting rod. E" slides vertically through the guide boxes E and C, each of which is bolted to the main framework A as shown in Fig. 1, and is provided with a. roller E mounted upon a pin inserted in the lifting rod, and the roller bears upon the cam .l-l which is mounted on the main power shaft ll at its end. The cam it is of such a shape that the piston E is gradually lifted while a blade is being raised and carried to the printing h: k and then drops quickly as the blade is placed upon the block in order that the blade may be rcleased or blown off the carrying arm onto the block without loss of time. Rotation of the lifting rod E" is revcnted by extending the pin E upon Which the roller E is mounted, so as to take another roller E, which travels between the vertical parallel bars E which are fastened at their upper and lower ends, to the guide box bases as shown (Figs. 1 and 2). The inlet ort E is connected with the flexible tube of the suction lifting arm group, by the pipe system E", E".

d by the fur-' 'ter secured to the framework A.

The first printing block F (Figs. 6, 7, 11 and 12) is provided with a supporting arm F (Iigs. 3, 6 and 7) pivoted upon the horizontal pin F, the latter being housed at the ends. in two lugs F, F, projecting upward from the table A. By. means of this pivot the first printing block F can be folded over onto the ,gccoi'ld printing block, will be hown late on. lllmxemoni in one direction is given to the block F and its arm F by the cam I! mounted on the main power shaft B (Figs: 1 and 5) acting upon the roller F arm F pivoted at l (Figs. 4 and 5), said arm being connected at its up per end by the cord F which passes over the idler pulley F, with the segment pulley Fflthe latter being integral with thearm F. Movement in the opposite direction. is imparted to the arm F and block F by the weight- F" acting through the cord F and segment pulley F. the latter being also integral with the arm F The cam serves to fold the first printing block F and its arm over onto the seam-d printing block for transferring the blade from the first to the second block and the weight wings it back when the -"lllll-{lll l.l !1.IQtllln. The printingblock l ,H'S w normally on the adjusting screw F touted in the table A?, whereby the height or the blockis exactly regulated (Figs. 7, 11 and 12) The block F is provided with two upwardly projecting pins F, F, which keep the blade in the proper position while being printed and a so during its transfer to the second printing block. The pins F, F are somewhat taper d or rounded at the ouier ends, but have a small conical dqn'cssiou at tin-.cxtrenxe ends, the use of lxich will be explained. later. After a blade is dropped over the pins: P, F

on the )rintin block F bv the suction car rying arm. I) the rioting of the first side of the blade is per ormcd by the first rintiug arm (l (Figs. 3, 4, 8, 9, 11 am 12). The arm (l is rigidly mounted on the vertical rod (1 (Figs. 1, 3, 4:, 5, and 9) which is movably mounted in the supports G and (i the former in the table A and the lat The rod G is vertically supported by the arm G the latter being rotatably mounted on the rod and having abme it the collar G rigidly secured to said rod (Fig. 4). The arm (l is provided with a roller G (seen in dotted lines in Figs. 4 and 5) which rests upon the cam G mounted upon the main power shaft B (Fig. 5 and dotted lines in Figs. 3 and 4). The cam G lifts the arm G and with it the rod G and printing arm G, twice at each rotation of the shaft B, or in one cycle, once oil the inking pad and once off the printing block. The rod (12 is given a. partial rotation and the printing arm thereby swung back and forth between the inking pad and the printing block by means of the the bar.

to the cam. 'At the outer end of't (Figs. 3 and 4), propcting vertic ouses wing-like arm G rigidly mounted on the rod G and acted upon horizontally by the cam G (Figs. 1, 3, l and 5) the latter being mounted on the main power shaft B, and the helical spring (1 (Fig. 1) attached to the framework A at one end and at the other to the arm G (Fig. 4:), the latter bein in tcgral with the collar G before descri ed, said spring rotating the rod inopxp'osition e rinting arm G is attached thetype blocfi G (Figs 1,4, 11 and r is remmbly secured to the arm G by the clamp piece G", having the spring G (Figs t), 11 and 12). The lower rods of the clamp piece are turned inward at a right angle and on e with ledges on the sides of the ty bfiifit, wliif-e Ll i? spring keeps tension on t e clamp piece to hold the type block firmly. There are four adjusting screws G, G in the arm G against which the clamp piece presses the type block and which are used for leveling the latter (Figs. 8, 9, 11 and 12). The type block G is kept horizontally in the proper osition by the locating pins G, T", an is provided with recesses G", G", on its under side to accommodate the pins. F, F of the printing block F (Figs. 11 and 12).

The arm (1 is further provided with a stripper pin G which serves to detach the blade from the type to which it tends to adhere when the printing arm rises from. the printing block. The stripper pin Gr travverses a vertical passage passing through the clam piece G, arm G, and type block G, as s own in Figs. 9, 1.1 and 12. Fig."

1.1 shows the type block, havin the type face G and the stripper pin d resting on a blade which is supported on the printing block F. Fig. 12 shows the type block slightly raised and the stripper pin still on the blade which it has detached from the t pe. In order to revent the stripper pin from touching t e inking pad when the type presses upon it, the pin is provided with a bar G the forked end of which engages with a groove 'ir. the upper part of the in, the other end of the bar being loose y pivoted on the stud G? secured to the arm G. When the type is dropped onto the inkin pad the extreme outer end of engages with a stop bar G, the latter being supported by the post Gr which is rigidly attached to the table A. This serves to prevent the stripper pin from descending low enough to touch the ink pad and thus avoids soiling the blade where the stripper pin comes in contact with it (see Figs. 8 and 9). The position horizontall of the arm Gr when over the printing block F is exactly defined by the adjustable stop screw G which, in this position of the arm, engages with the rigid limiting apost G" f-il 'mounted on the fix,

lowing the 1y from.

the table A the spring G throwing the arm against the limiting post and the cam G swingin it over the inking pad.

It is desirable that the pressure of the.

type shall be adjustable both on the blade and on the inking pad. Therefore the vertical rod G which carries and operates the printing arm G, is provided with theremovable weights G which are supported on the rod by'a. collar underneath them as shown in Figs. 1, 4 and 5. The weights have a radial slot G" somewhat narrower than the diameter of the rod, the latter being flattened on two sides at G above the weights, so that they may be easily added or removed (Figs. 1, 4 and 5). As it is usually advisable to use less pressure on the inking pad than on the blade, the rod G is also provided with a short horizontal am (it rigidly mounted upon it (Figs. 1, 4 and 5). This arm G is so positioned upon the rod that when the latter descends with the printin arm G over the printing blck F, the sai arm G has a clear )ath, but when the rod descends to apply the type to the inking pad H, the said arm engages with the lever G iv oted at G, and carrying beyond the pivot the weight G and thereby encounters the a b I u resistance due to raising said weight, which resistance proportionately lessens the pressure of the type on the inking pad (Figs.

1, 4 and 5). v The weight G being movable on the lever G the said pressure can be regulated at will.

Ink for the type on we arm G is supplied by the inking pad H, which consistsof any suitable bibulous material like blotting paper, which is supported by the fiatbottomed dish H the latter being rotatably mounted by means of the hub H on the vertical pin H fixed in the table A (F'gs. 3, 4, 8 and 9). The dish H rests u on the disk-like end of the mover arm ll which is pivoted upon the pin H as shown in dotted lines in Figs. 8 and partially in section in Fig. 9, the friction washer H? being inserted between the arm and the hub of the disk as; shown in Fig. 9. The outer end of the arm H is connected by the loosely the short horizonta arm H rigidly; mounted on the rod G, the partial rotations of the latter serving to move the arm Hback and forth about its pivot on the. pin H. This tends to give the dish H ,a partial rotation in each direction. The

dish, however, is restrain from rotating in one direction by the eccentric lock roller H (Figs. 8 and which s rotatably pse'. of r ng ng. .ng padv under:

lpivoted bar H with i n H and ngag shows the depth of the recesses.

the type. The eccentric lock roller II is provided with a spring H (Figs. 8 and 10) by nicans of which it tends to turn in the direction of the arrow, and so as to lock the dish against any backward movement.

Mounted uponthe same pivot pin F as the first printing block F, is the second printing block 1, the latter being provided with the forked supporting arm I Wlll'fll has integral with it at each end the segment pulleys 1 and I, respectively (Figs. 1, i3 and 7). The block I is made to swing around the pivot pin F and fold over onto the first printing block F by means of the cam I (Fig. 5), lever I (Figs. 1 and 5), cord I, idler pulley I and segment pulley I and is returned to the printing position by the weight P (Fig. 4), acting through the cord I on the segment pulley P, in substantially the same way as the first printing block F is operated by its connected mecha- Ihsm. The face of the second printing block I, unlike that of the first printing block F, has recesses I which register with the first printed impression when the blade is turned over onto it, and so avoids contact with the freslrink, and consequent blurring. These recesses are well shown in Figs, 6 and 23, and Fig. 22 shows the printing of the first side of the-blade where the lettering agrees in position with the recesses. Fig.2! The second printing block I, like the first printing block, has an adjustable support in the screw 1 (Fig. 7), and is provided with two sharp pointed locating pins 1 I (Figs. 6 and 7) I The blade, after being transferrea to we second printing block I, having been printed on one side by the first printing arm G, is printed on the remaining side by the second printing arm J. This second printingarm 15])1'0V1d6d. with a type block andacces sories, including inking mechanisms, in all respects similar to those appertaining to the first printing arm G, excepting that those governing the horizontal movements and the inking mechanisms are opposite handed. The type block for the second arm J takes ink from an inking pad K, and the arm J operates in exactly the same manner as the first printing arm G. The accessory mechanisms of the arm J Wherever designated by letters in the drawings, carry the letter J with the same cardinal index number as is carried by the corresponding accessory parts of the first printing arm G, The corresponding parts are, vertical rod J supports J and J arm J, collar J roller J, cam J wing-like arm J", cam J helical spring J, arm J, type block J", clamp piece J, adjusting screw J, locating pins J", stripper pin J, type face oar J stud J stop bar J post J stop screw J limiting post J, removable Weights J3,

radial slots J, flattened part J of rod J;

horizontal arm J lever J lever pivot J and the weight J, the type block J being also provided with a spring and with recesses corresponding respectively to the spring G and recesses G previously described After the blade has been printed on the second printing block I it is lifted therefrom and tossed into a suitable receptacle (not shown in the drawings) by the throw-off arm L (Figs. 1, 2,3, 6 and 7),said arm being pivoted on the pin L and havinga bifurcated outer end which embraces the second printing: block I, but without contact with it, as plainly shown in Figs. 3 and 6. The throw-off arm is provided with a position ing screw L and is operated in much the same manner as the printing blocks F and. I, the lifting ofi' movement being given by the cam L acting through the roller L,

lever L cord L", passing over the idler pul-- ley L and segment pulley L the latter being integral with the arm. The return movement is effected by the weight L which depends from the segment pulley L by the cord L, said pulley, also, being integral with the arm L (Figs. 1, 2, 3, 5, 6 and 7).

The mechanism is automatically stopped byihe exhaustion of one or more of the stacks of blades on the stack plate C, in the following manner: The belt which drives the mechanism is guided upon the tight and loose pulleys B and B, respectively, by the shipper arm M, said arm having a forked outer end adapted to embrace the belt and being rigidly secured upon' the upper end of the vertical shaft M the latter. being rotatably mounted in the bearings M and M of'the bracket M, which is screwed to the edge of the table A (Figs. 1, 3, 4 and 5). The spring M (Fig. 1) acting upon the collar M fixed upon the shaft M and reacting upon the bracket M, tends to throw the shipper arm and, consequently, the belt, to the loose pulley B", but when the mechanism is normally working, this is prevented and the belt guided on the tight pulley B by the latch arm M rigidly mounted on the lower end of the said shaft M, and engaging at its outer end with the latch bar M pivoted at M on the main frame A and having the shoulder M engaging with the under edge of the latch arm M (Fig. 18). The engaging end of the latch bar M is normally held up against the latch arm by the spring M (Fig. 4) and is laterally guided between two pins M", M, on the under side of the latch arm. Thevertical rod D upon which the suction carrying arm D is mounted is provided with the horizontal arm 11 (Figs, 1, 4 and 5) having at its 'outer end a. vertical adjustable releasing screw M When the suction carrying arm D is over a blade stack this releasing screw M H is directly over the latch bar M which is restraining the belt shipper arm M from throwing the belt onto the lose pulley by the action of the spring 1W. The screw M does not, however, descend low enough to engage the latch bar as long as there are blades in the stack on which the suction carrying arm drops, but when the last blade has been removed from this stack, then the suction pad D drops into the recess in the block C (Figs. 16 and 17) and allows the suction carrying arm and its supporting rod I), and consequently the arm M and, screw M, to descend far enough for the said screw to engage the latch bar M and by depressing it release the latch arm KI" and allow the spring M to act and so throw the belt onto the loose pulley I'r and hereby bring the whole mechanism to rest.

Having now explained the various parts ot the machine in detail, I shall proceed to describe its general operation The stack place C, having been sup lied with blades, the shipper arm M is pulled over to the tight pulley and the latch arm M thus allowed to engage with latch bar M and the device starts to operate. We will suppose that at starting, the suction carrying arm I), the first printing block F, the first printing arm G, the second pn'nting block I. the second printing arm J, and the throw-oil arm L are in the respective positions shown in the diagram Fi 25,- while the suction piston E is in t e position;

shown in Fig. 19 with the inlet port partly uncovered. As the movement progresses, the suction carrying arm D is raised by the lGHL'I I) acted on by the cam D andis then swung by the cam D over the first printing block F upon which it is dropped by the said cam D. In the meantime the suction piston has been rising through the action of the cam E (Fig. 19), but as soon as the carrying arm I) has reached the print ing block F, the piston is suddenly dropped by its cam Ff and the backward flow or air through the connecting pipes insures mat the blade is released fronrthe carrying arm and left on the printing block when the former rises again. The parts are now in the position shown in the diagram Fig. 26. The carrying arm D isnow the cam I) and is swung back over the stack plate C by the action of the weight. I), and. in due time is dropped by the said cam .D onto the stack f Hades next in vorder, the stack plate (1' havingdn the inteiwal rotated'a quarter turn. in the mea-rv time the first printing arm G has been lifted from the inking pad H by its cam Gand been swung over the printing block its cam G and then dropped on the bl 'e which 1s now lying upon the printing block lifted again by y F, and printing the blade, the 27. by its cam G" and then swung back over the inking pad H by the spring G after which it is dropped upon the inking the latter having ust finished making a parthe position of Kart-sbeing shown in the diagram Fig.

ext, the printing arm G is lifted again tial rotation by means of its turning mcchanism, as previously herein explained. In the meantime the second printing block I has, by its cam I, been folded over onto the first printing block F, its sharp pointed pins 1 I, registering in the small depressions in the ends of the pins F, F of the first printing block F and the parts are in the relation shown in the diagram Fig. 28. Now the second printing block I returns to its printing position by the action of the weight 1 ,'w1th the first printing block 'F following it closely, impelled by its cam F and the parts are as shown in the diagram Fig. 29. The dotted lines in Fig. 7- show the two printing blocks F and I swinging over. together and the blade in the act of transit from the block F to the block I. The first printing block F now returns to its printing position by the action of its weight F, an the second printing arm J is raised from its inking pad K, swung over and dropped on the second printing block I, which carries the inverted blade, by its cam in the same manner as the first printing arm G was operated, and the blade 18 printed on the other side, the parts bein r 1n-the pos ion shown in the diagram *ig. 30. Lastly, the second printing arm J returns to its inking position, its inking pad K It will be obvious that for printm razor blades or ot er articles on one si e only the machine will simply re uire the omission of certain parts and a sight modification of other parts. I do not limit myself to the specific details of construction.

Having thus described my inventiomwhat I claim as new and desire to secure by Letters Patent is:

1. In a machine for printing on metal, the:

combination of a rotatable stack-plate, for holding supply stacks of metal, a prifitin I block and means for printing on the meta meansjor convey' the metal from said stack-plate to said printing-block, and means for automatically turning the Btack-plate in partial rotations .vhcrcby the supply stacks of n tal are brought successively into position to register with the conveying means.

In a machine for prin ing on metal, the comhimtion of a rotatable stack-plate for holding supply StiltliS of metal, a printing block and awaits for printing on the metal, means for conveying the metal froi'n said staclvplatc to said printing block, a spindle on which said stack-plate is mounted, a friction disk rigidly secured to said spindle, a pulley loosely mounted on said spindle and on which said friction disk is made to bear and support said spindle, and means for interrupting the rotary movements of said spindle at stated intervals.

3. In a machine for printing on metal, the combination of a rotatable stack-plate for holding supply stacks of metal, a printing block and means for printing on the metal, means for conveying the metal from said stack-plate to said printing block, means for rotating said stack-plate, latch pieces on said stack-plate, a latch for engaging said latch pieces, and means for causing the operation of the latch for stopping the rotation of the stack-plate at stated intervals.

4. In a machine for printing on metal, the combination of a rotatable stack-plate for holding supply stacks of metal, a printing block and means for printing on the metal, means for conveying the metal from said stack plate to said printing block, a spindle on which said stack-plate is mounted, a pulley loosely mounted on said spindle. a triction disk rigidly scoured to said spindle and adapted to support the same and to give ft tary motion thereto by bearing on said pulley, latch pieces on said stack-plate, a pivotal latch adapted to engage said latch pieces, and :1V pull rod and actuating connections therewith or disengaging said latc from said latch pieces at stated intervals.

5. In a machine for printing on metal, the combination of a stack-plate for holding supply stacks of metal, a panting block and means for printing on the metal, a carryingarm mounted to move vertically and swing laterally, a suction cylinder, said carrying arm being provided at its outer end with a suction pad having an annular recess surrounding a solid central portion and forming a suction space, and with communicating passage Ways leading from said annular suction space through said carrying-arm, and

by suitable means connecting with said suction cylinder, and means for causing said carrying-arm to move with adhering m'etal from said stack-plate to said printing block and back o the stack-plate.

6. In a machine for printing on metal, the combination of a sta k-plate for holding supply stacks of metal, a printing; block and means for printing on the metal, carrying arm for delivering metal from said stack;

i plate to said printing block, the said can,

ing arm being provided with a lateral extension'picce, fixed standards for contacting with said lateral extension piece, a rod to which said carrying'arm is secured, a lever having connections for supporting said rod, means for actuating said lever thereby imparting a vertical reciprocating motion to said rod and car'ryingarm, and means for giving said rod and carrying-arm a back and forth turning movement Within the limits permitted by said extension piece and said standards.

7. In a machine for printing on metal, the combination of a stack-plate for holding 8 supply stacks of metal, a printing block and means for printing on the metal, a carryingarm adapted to take metal from said stackplate and deliver the same to said printing block, said carryingarm being connected with a rod, a lever having connections for supporting said rod and imparting vertical movements thereto, means for partially rotating the said rod and carrying-arm in one direction comprising a cam, a roller, a lever, a pull-rod and an arm, and-means for partially rotating said rod and carryingarm in the reverse direction comprising a weight, an arm, a cord, and an idler pulley, and means for limiting the turning movements of said carrying-arm in each direction.

8 In a machine for printing onmetal, the combination of a stack-plate for holdlug supply stacks of metal, a printing block,

is supported, segment pulleys on said arm, connections With said segment pulle s for rotating the said arm on its pivot, t ereby turning the printing block upside down and right side up, means for printing the metal when on said printing block, and meansfor conveying the metal to be printed from said stack plate to said printing block.

In a machine for printing on metal, the combination of a pivotal printing block, means for printing on the metal, means for placing the metal to be printed on the printing block, and means for turning the printing block upside down and right-side up whereby the metal may be turned over and detached from said printing block.

10. In a machine for printing on metal, the combination of a pivotal printing block, means for printin on the metal, a carrying arm adapted to ta e the metal from a source of supply and transfer the same to said printing block, means for operating said carrying-arm, and means for turning the printing block upside down and right-side up whereby the metal may be turned over and detached from said printing block 11. In a machine for printing on metal, the combination of a pivotal'printing block, means for printing on the metal, a carryingarm adapted to ta e the metal from a source a pivotal arm on which said printing block 100 

